<template>
    <div :class="className" :style="{ height: height, width: width }" />
</template>

<script>
import echarts from 'echarts';
import 'echarts-gl';

require('echarts/theme/macarons'); // echarts theme
import { debounce } from '@/utils';

export default {
    props: {
        className: {
            type: String,
            default: 'chart',
        },
        width: {
            type: String,
            default: '100%',
        },
        height: {
            type: String,
            default: '300px',
        },
    },
    data() {
        return {
            chart: null,
        };
    },
    mounted() {
        this.initChart();
        this.__resizeHandler = debounce(() => {
            if (this.chart) {
                this.chart.resize();
            }
        }, 100);
        window.addEventListener('resize', this.__resizeHandler);
    },
    beforeDestroy() {
        if (!this.chart) {
            return;
        }
        window.removeEventListener('resize', this.__resizeHandler);
        this.chart.dispose();
        this.chart = null;
    },
    methods: {
        initChart() {
            this.chart = echarts.init(this.$el, 'macarons');
            const data = [];
            for (let t = 0; t < 25; t += 0.001) {
                const x = (1 + 0.25 * Math.cos(75 * t)) * Math.cos(t);
                const y = (1 + 0.25 * Math.cos(75 * t)) * Math.sin(t);
                const z = t + 2.0 * Math.sin(75 * t);
                data.push([x, y, z]);
            }
            this.chart.setOption({
                tooltip: {},
                backgroundColor: '#fff',
                visualMap: {
                    show: false,
                    dimension: 2,
                    min: 0,
                    max: 30,
                    inRange: {
                        color: [
                            '#313695',
                            '#4575b4',
                            '#74add1',
                            '#abd9e9',
                            '#e0f3f8',
                            '#ffffbf',
                            '#fee090',
                            '#fdae61',
                            '#f46d43',
                            '#d73027',
                            '#a50026',
                        ],
                    },
                },
                xAxis3D: {
                    type: 'value',
                },
                yAxis3D: {
                    type: 'value',
                },
                zAxis3D: {
                    type: 'value',
                },
                grid3D: {
                    viewControl: {
                        projection: 'orthographic',
                    },
                },
                series: [
                    {
                        type: 'line3D',
                        data: data,
                        lineStyle: {
                            width: 4,
                        },
                    },
                ],
            });
        },
    },
};
</script>
